To all whom it may concekn



JACOB-KLEIN, OT- WILLIAMSBURG, NEW YORK.

Leners Patent' No. 77,623, dated May 5,1868.

IMPROVEMENT IN PBRMUTAIION-LOGKS.

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TO ALL WI-IOM IT MAY. CONCERN:

Be it known that I, JACOB KLEIN, of Williamsburg, in the countylof Kings, in the State of' New York, have invented .certain new and useful Devices for Chang Combination-Lock forv Safes; and the following is a full, clear, and exact description of the same, reference being had to thexaccompanying drawings, making a part of this specification, in which- Figure 1 represents a'section through the inside of the lock, with the face-'plate removed, showing the intcrnalerrangcment and combination of the several parts.

Figure 2 shows an edge view of the same, withv the knobs for operating br'okeu o'.

Figure 3 is a representation of a section lthrough an end view of the same.

Figure 4 shows the face oi' door, with knobs and index-plates for setting|- and operating the lock outside oi the safe.r l

Figure 6 represents a view of the rings, with the method of clamping and holding them from being changed by any means when the safe is closed.

Figure -'i' shows the bodkin used to insert in the lock to change the combination.

The small ignres under 5 and 6 are the sectional edge views of those ring-plates. v

The object of my invention is the production of a Simple, not expensive, and most thoroughly eiicient burglar-proof safe-lock for the doors-of iron safes, bank-vaults, stores, &e

My invention consists inthe arrangement and combination of the several parts, and the mannenof securing ing and Holding the Combination-Guardsof them in position, so-that when fastened, the lock can onlybe opened again by a. knowledge of the position in. v

which some of the parts -are left, theybeing adjusted on the inside, before the door is closed and locked, the

adjustment displaced by the knob A, and restored again to the proper position for opening by the index-plate,

which surrounds the knob,'the combinations being onlyknown to the parties in interest.

To enable others to make' and use my improved burglar-proof safe-lock, Iwill describe it in detail, referring to the drawings, and'to the letters of reference marked thereon.

The frame, or plates, of my improved combination-lock may be of any'de strength, and may be secured on the inside of any door, of any required thickness, or" made of any suitable material, there being no vent, or key-hole, or any opening through the door. but the two roundholes, which are sired dimensions and required closely illed bythe shafts of the knobs A and B, andare so surrounded by caps and plates as to not'leave the slightest crevice in which anything can be inserted to move the bolt or blow open Athe safe. v

-The sliding bolt D, being constructed in a similar manner to those of. the ordinary lock, it havinga guidebar, D', extending in towards the rear, and held in place by the guide-piece y. The bolt D having an irregularshaped opening, II, throdgh it, which surrounds the shaft b of the knob B, and is operated, z'. e., moved out and in by'the lugf, on the shaft b, by the quarter turn of the knob B from the outside of the door.

` 'On thetop edge ofthe bolt D is 'a projection, I, in which is a groove or recess, ,Land into which the catch or arm d is fitted,- so as to pass in when the boltD is drawn back. The arm d; being pivoted to-a fixed stud, c, extends back over the top of plates E and F, and forms a right-angle levervvith the points le and Z, varying in' length, so as to catch in the'v notchesy'. and j', in the edges of the disks or plates'E and F, when .the notches are 'both brought in position to receive them.

On the'stud isy hinged a mvable Ward, e, working over theshai't of the knob B, which, by the action of a stem or luggf, raises the points I: and Zlof the lever el out of tbe notches jj in thevplates E and F, so that the fulcrum-end of the `lever catches in the notch o in the belt, and holds it firmly iixed, when the combination is disarranged by turning the knob A in either direction, 'and the lboit D cannot be moved until the combinztion is restored, `by bringing'the platos and again to the same position they were in whenV the bolt was thrown but. Thisl is not-easily eii`ected,"and canvrnrely,ii`ever, be doineunless lthere is a knowledge of the position the plates are in when the bolt is shoved andthe lever set, as seen in red lines' in iig.' 1.

The mechanism by which the" safety of the lock is renderedso eicent is of a very simple and cheap character.

lIt consists of a double spring, I? P, (iig. 6,) secured to the disk N. The-ends of the spring pressing on-two reverse keys, g g', so as -to force the keys hard-in both directionsiagainst theperiphery of thering-plate M,'thus forniing a brake, when the ring is set to any desired or given numberto form the secret combination for locking. This device is Ioperated, and the ring-plate M released for changing the numbers, by simply inserting the oval bodkin-U into the small holo g in the1ock, when the hole g is in position corresponding with thc'opening through the lock-plate made for the purpose, thereby securing the safety and certainty of being able to open the lock when in the secret. The disk C, and the index-plate G, which is attached to the knob A, istbc regulator, and the only means by which tle combinations are fixed, the numbers kept registered, onretained -in the memory, so that thelock can be opened by the parties in interest, and no others.

' The operation of locking is as follows The catch or arm ol being in the position shown in Viig.' 1, the knob B is turned, and the bolt Dslides out. The knob A and index Gr being turned in a direction from the bolt, the disk F, to which it is attached on the knob-shaft a, turns with it, and the catch Z, o n the levernrm 1h-beinglifted out ofthe notch 7' by the action of the movable ward e c, the opposite end of the lever beingdepressed, forms the catch o, which prevents the return of the bolt D. In the rear of' the disk F is a larger plate-disk, E, which is provided with a correspondingv notch, j', in which the point 1c, on the lever-arm d, also catches when the two notches j and j', in the disks E and li", come together, (as shown in iigs.' 1 and Wheuthe notches in the two disks thus coincide, ,the arm d takes the position shown in the figuran-nd enables the bolt'D to slide out and in `freely, the knob A, index Gr, 'shaft a, and disk F being connected to'turn together, so that when the notch is up, and the number, say 15, coincides with the arrow-point 2, or notch in the ring c, loutside. of the l index, i(as seen in iig. 4,) that number forms the base or unit of'the combination.

The vknob-shaft a passes through the ring-plate M, to whichthe disk E- is fitted, and held'by the brake-keys q q and springs P P, as seen in fig. 6.

Whenit is desired to change the combination ot` the numbers, I insert the bodkin U in the hole g, and turn it one-fourthround, and the ring-plate M will be free to be moved, and the number changed to any point. Thenwithdraw the bodkin, and the numbers of the combination forlocking and unlocking are permanently set for the time being, the number being kept where the index is at the time the bodkin is withdrawn, will be to combine with any fixed number to withdraw the bolt.

What I claim as my invention', -and `desire to secure by Letters r'atent, isy t 1. The oscillating hinged ward e e, as constructed, in combination with the catcher arm d, operating with the disks E F and'bolt D, by means of the acutc-angle lugs j", on the shaft of the knobB, substantially as herein described., l g

2. Ilclaim the double-acting spring P P, the brake-keys q 3y,` operating reversely against the ringplate M, for holding it in position, when set to a given number, as sehforth.

In testimdny whereof, I hereunto subscribe my name in thepresence of#- i JACOB KLEIN.

Witnesses:

JAMES G. MORGAN, JOHN A. PALMER. 

